![]() By subscribing your device you can add airplane information that's displayed on, or you can opt-out from being tracked. You can influence how your glider is displayed in OGN by submitting a record into the devices database. OGN APRS servers cache packets in memory (for few seconds) to prevent duplicates.įor more information about the APRS server software please visit following link.Īlso see OGN infrastructure details. They constantly exchange all received messages in order to keep the available data consistent. Due to load balancing and better redundancy in case of a failure there are currently four servers. The servers run the APRSC software, which receives all messages from the different OGN receivers and relay this information on request to the client tier. By clicking on the following links you can see all OGN receivers presently connected to the selected server. The OGN APRS servers form the backbone of the OGN infrastructure tier. By keeping each receiver aware of traffic in its vicinity, duplicate reports about the same device are prevented. To limit bandwidth usage this monitoring activity is only done and required within a definable radius around each station. The receivers achieve this by constantly monitoring messages received by neighboring OGN receivers. All information between receivers is is exchanged via the OGN infrastructure tier.įor a detailed description of the APRS messages sent by OGN receivers, please refer to subscribing to OGN data and decoding the data section.Īs the reception area of two or more OGN ground stations may overlap, the stations must synchronize all received messages in order to avoid multiple separate reports of the same device. There is no direct communication between OGN receivers. The Automatic Packet Reporting System ( APRS) protocol is used to exchxange data between the receiver-, infrastructure- and client-tier. The OGN receiver's antenna receives the messages broadcasted by FLARMs and OGN trackers within its reception range, the DVB-T stick processes them and the computer sends them via TCP network connection to one of the two OGN servers. ![]() Please refer to the OGN receiver hardware section for details. OGN Receiver consist of an antenna, a DVB-T stick and some sort of computer (Raspberry Pi, ODROID, BananaPi, …). The present OGN architecture is set up in several tiers (layers), which interact in various ways. Last, but not least OGN data can help in SAR actions. Since normally controllers cannot see gliders on their radar screens (unless they are equipped with transponders which is not very common), OGN can propose a good alternative! With constantly increasing reception coverage we hope to improve safety in the areas where glider traffic interacts with "big" aviation, leading into occasional incidents. ![]() What brings us all together is our passion for gliding! Everyone can join and everyone who joins brings in something that makes OGN better and better! We do it because we are passionate about aviation (and soaring in particular) and because it makes lot of fun!Īmong us there are people of different professions and skills. ![]()
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